Coke-oven



Aug. 4, 1936.'

J. M INTOSH I cdKE OVEN Filed March 21, 1955 4 Sheets-She, 1

R. E r L Aug. 4, 1936. 4. 'McINTOSH 2,049,817

' COKE OVEN Filed March 21, '1955 '4 Sheets-Sheet 2 Patented Aug. 4,1936 UNITED STATES PATENT OFFICE coKE-ovEN Application March 21, 1933,Serial No. 661,961

1 Claim. (01. 202-263) This invention relates in general to cokingplants, and has more particular reference to the provision of efiectivemeans for taking care of the smoke incident to the charging orrecharging of a heated coking oven.

In the operation of by-product coke-ovens each charge, as completelycoked, is pushedv from the coking chamber or oven and a succeedingcharge is deposited therein immediately. 0 There is, of course; a hightemperature in the oven chamber and as the coal is poured into the ovenconsiderable smokeand gases are evolved, which are commonly dischargeddirectly from the charging or recharging holes and ascension 13 pipes ofthe ovens into the open air.

This invention has for one of its objects the by-passing of the escapinggas and smoke from the oven being charged into one of the adjacent ovensand thence into the collector main, thereby eliminating the pollution ofthe atmosphere, the loss of by-products, the damage to the charging carand the hazard to the operators. Another object is the provision of anovel mechanism (to be described in detail) for connecting the oven tobe charged to an adjacent oven. I A further object is to provide a novelcontrol for the charging car which will prevent the operation of the carwhile it is operatively associated with the ovens.

In the drawings:

Figure 1 is a plan view of several ovens of a battery of coke-ovens withthe charging mechanism in position.

Figure 2 is a sectional view taken on the line 11-11 of Figure 1.

Figure 3 is a sectional elevation through a battery of ovens showing thecharging car mechanism in end elevation.

Figure 4 is a sectional elevation through the charging car and by-passconduit.

Figure 5 is a sectional'view taken on the line VV of Figure 1.

Referring more particularly to the drawings 45 which show the apparatusof my invention associated with a standard form of by-product oven, theletter A designates a battery of ovens which are provided with the usualcharging and recharging openings or holes 2 closed by lids i..

60 The oven to be charged is designated by the numeral 3 while theadjacent oven to which the smoke is evolved from the oven being chargedis by-passed is designated by the numeral 5. A loaded electricallypropelled charging larry car 56 is shown in position with its hopperspouts 6 directly above the charging holes 2 of the oven 3 to becharged. The larry car is provided with a plurality of charging hoppersequal in number to the number of charging holes in each oven of thebattery, and each of the hoppers is provided with one of the spouts 6.Each hopper spout 6 is provided with a vertically movable drop sleeve 9adapted to be lowered so as to connect the hopper spouts with thecharging holes 2 of the oven to be charged.

The hopper spout of the charging larry car nearest the coke dischargeend of the ovens is connected to a by-pass conduit 8 of such length thatit will bridge the distance between the spout and one of the chargingholes of the next adjacent oven. The conduit 8 is providedat its freeend with a vertically movable drop sleeve '8 adapted to be lowered andconnected with one of the charging openings or holes of the ovenadjacent the oven being charged. The four drop sleeves 9 on the larrycar hopper spout 6 and the single drop sleeve 17 on the by-pass duct 8are all adapted to be simultaneously lowered by the larry car operatorfrom his cab. The lowering of the drop sleeves 9 is accomplished by alever in, links H, line-shaft i2, levers i9 and links it.

The drop sleeve "5 on the discharging end of the by-pass duct or conduit9 is adapted to be lowered at the same time as the sleeves 9 by means ofa lever i5 and cable i6 trained over pulleys ii. The levers it of theoperating mechanism for the sleeves 9 are equipped with counterweights2? which partially counterbalance the weight of the sleeves and effecteasier operation in raising them.

The electrically propelled larry car is provided with an operating motorl9 which includes in its circuit a main circuit-breaker E8 of any usualconstruction, and this circuit-breaker is connected to the operatinglever it of the sleeveoperating mechanism by links 29 in such mannerthat the circuit to the motor I9 is broken when the drop sleeves l and 9are lowered by the mechanism described above.

After the drop sleeves i and 9 are lowered the cut-01f gates 28 in eachof the hoppers of the larry charging car are individually opened by theoperator through levers 22 and 23, links 24 and 25 and shafts 26, andthe coal from the larry car hoppers is permitted'to drop by gravity intothe oven 3 being charged. The lever and link operating mechanism for thecut-oif gates 21 is so adjusted that the gates of the end hoppers areopened ten seconds or more before those of the center hoppers so as topermit the coal being b-nl aid

charged to run clear of the brickwork around the charging holes at theends of theoven, causing any excess in the amount of coal charged toremain in the charging holes at the middle of the oven. This method ofcharging leaves a gas pocket above the'top oi the coal at each end of 28which when closed is adapted to prevent coal and dust enteringthe-conduit or. duct 8 from the hopper spout during the chargingoperation. The gate 28 when in open position extends into the path oftravel of the coal through the hopper spout and the passage or the coalthrough said spout is adapted to operate or move thegate into operatingshaft 28 and 'a counterweight 38 mounted on a lever 28''.

The conduit or duct 8 is provided at its entrance end, which is the endconnected'with the hopper spout, with a trap pocket 8 adapted to receiveand trap any coal or 'dustwhich may enter the conduit past the valve orgate- 28. The pocket 8 is provided with a counterweightedclosure 8 whichmay be opened to permit the discharge of any of the-trapped material.

Substantially simultaneously with the opening of the gates 2i to permitthe coal being charged to flow to the oven, valves 29 will'be opened topermit steam to flow to aspirator nozzles 30' located in ascension pipes3| of the ovens 3 and 5. The steam from the aspirator nozzles 38 inducesa suction in the-pusher end of the oven 3 which is being charged andthrough the gas passage 32 of the adjacent oven 5 to which the conduit 8delivers its smoke and gases. The suction created in the oven 5 iseiIected through the by-pass conduit or duct 8 and in the coke deliveryend of the oven 3 being charged. This suction pulls all of the gas,smoke and vapor from the oven 3 into 'the ascension pipe and thence intothe collector main 33.

After the coal has been charged in the oven 3 the cut-off gates 2| areclosed by the operator so as to prevent the escape of smoke and gasesthrough the hoppers of the charging car. oven operators next level thecoal inthe oven which has been charged, and if an excess of coal hasbeen'charged the excess will be withdrawn from'the'oven so as to leave aclear gas passage along the top of the charged oven.

The.

After the coal been leveled an operator will raise the drop sleeves 3 otthe hoppers, with the exception of the hopper to which the by-passconduit or duct 8 is connected. The raising of these drop sleeves 9 isdone by means of levers 34 and links H which raise the sleeves asuflicient height to permit replacement of the lids I.

Latches 35 are provided for holding the sleeves in scribed above, theoperator of the larry car will simultaneously raise all of the dropsleeves I and 9 to their uppermost positions' As the drop sleeves 1 and9 are raised to their uppermost positions, the circuit-breaker l3will beautomatically closed to complete the circuit to the closed position. Thevalve or gate 28 has an larry car operating motor J9. The 'lids Larethen replaced on the charging holes at the end of the ovens'3 and 5through which the sm'oke and gases have been by-passed, and the steamvalves 29 will-be closed since the aspirating effect of the steam in theascension pipes is no longer necessary. After the lids l have all beenreplaced A coke-oven battery coal-charging larry car carrying a hopperfor each of the recharging openings of one oven, means connecting each'of said hoppers with one of said charging openings of the oven to becharged, a smoke conduit connected to and communicating with at leastone of said first named means and adapted for. connection with one ofthe charging openings of an adjacent oven, a valve in'said smoke conduitadjacent its point of communication with said first named means, saidvalve being operable into closed position by the passage of coal throughsaid first named means, whereby the passage'of coal and dust into saidsmoke conduit is prevented, said smoke conduit being provided with atrap pocket adjacent its end communicating with said first named meansto 'trap any coal and dust passing said valve, said JAMES McINTOSH.

. the larry car is moved along the battery of ovens

